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Tutorial Difficulty Level Variables whose names begin with @ are arrays. If @sue is an array, it is different variable from $sue. However, members of @sue are selected by $sue[$i].
The construction $#arrname gives the maximum subscript of the array @arrname.
# Simple array constructs.
@fred = ("How", "are", "you", "today?");
print "\@fred contains (@fred).\n";
$mike = $fred[1];
print "$mike $fred[3]\n";
# The array name in a scalar context gives the size.
$fredsize = @fred;
print '@fred has ', "$fredsize elements.\n";
# The $#name gives the max subscript (size less one).
print "Max sub is $#fred\n";
